Patents by Inventor Tasuku ISHIGURO

Tasuku ISHIGURO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230395794
    Abstract: A non-aqueous liquid electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte, in which the positive electrode includes a positive electrode active material, and a carbon nanotube, the positive electrode active material includes a lithium-transition metal composite oxide containing Ni, a proportion of Ni in metal elements other than Li in the lithium-transition metal composite oxide is 80 atm % or more, and the non-aqueous electrolyte includes a fluorosulfonic acid salt.
    Type: Application
    Filed: October 27, 2021
    Publication date: December 7, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Yuanlong Zhong, Chisaki Fujitomo
  • Publication number: 20230344005
    Abstract: The non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte. The electrolyte includes an organic sulfuric acid salt represented by a formula (1): (R—O—SO3)nX1, where R is an organic group with 1 or more carbon atoms, X1 is a cation, and n is an integer of 1 to 3. The electrolyte further includes ethylene carbonate and fluoroethylene carbonate. The ethylene carbonate volume Vec and the fluoroethylene carbonate volume Vfec satisfy 0.1?Vec/Vfec?15.
    Type: Application
    Filed: August 23, 2021
    Publication date: October 26, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Chisaki Fujitomo, Tasuku Ishiguro
  • Publication number: 20230307610
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a separator, a negative electrode facing the positive electrode with the separator interposed therebetween, and an electrolyte; the electrolyte includes an acid anhydride; the negative electrode includes a negative electrode mixture including a negative electrode active material and a carbon nanotube; and the negative electrode active material includes a silicon-containing material and a carbon material.
    Type: Application
    Filed: August 23, 2021
    Publication date: September 28, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Chisaki Fujitomo
  • Publication number: 20230170527
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode material mixture containing a negative electrode active material capable of electrochemically absorbing and releasing lithium ions, and carbon nanotubes. The negative electrode active material includes a silicon-containing material and a carbonaceous material. The non-aqueous electrolyte includes at least one cyclic ester selected from the group consisting of a cyclic sulfate ester, a cyclic sulfite ester, and a sultone. A content of the carbon nanotubes in the negative electrode material mixture is 0.005 mass% or more and 0.05 mass% or less.
    Type: Application
    Filed: March 25, 2021
    Publication date: June 1, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Satoshi Nishitani, Yuanlong Zhong, Chisaki Fujitomo
  • Publication number: 20230035623
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the negative electrode includes a negative electrode current collector, and a negative electrode active material layer supported by the negative electrode current collector and containing a silicon material as a negative electrode active material; when dividing the negative electrode active material layer into two layers of a first region and a second region having the same thickness, the second region is closer to the negative electrode current collector than the first region; the silicon material is contained in the first region more than the second region; and the nonaqueous electrolyte includes at least one additive selected from the group consisting of a sulfite compound and a sulfate compound.
    Type: Application
    Filed: December 1, 2020
    Publication date: February 2, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Chisaki Fujitomo, Tasuku Ishiguro, Shunsuke Nambuya
  • Publication number: 20230025305
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the negative electrode includes a negative electrode current collector and a negative electrode active material layer supported by the negative electrode current collector, when dividing the negative electrode active material layer into two layers of a first region and a second region having the same thickness, the second region is closer to the negative electrode current collector than the first region, the first region and the second region each contains graphite particles, a ratio P1/P2 of interparticle porosity P1 of the first region to interparticle porosity P2 of the second region is greater than 1, and the nonaqueous electrolyte includes at least one additive selected from the group consisting of a sulfite compound and a sulfate compound.
    Type: Application
    Filed: December 1, 2020
    Publication date: January 26, 2023
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Chisaki Fujitomo, Tasuku Ishiguro
  • Patent number: 11456460
    Abstract: A nonaqueous electrolyte secondary battery includes a negative electrode plate, a negative electrode current collector lead joined to the inner peripheral end of the negative electrode plate, and a negative electrode current collector-exposed part where a negative electrode active material layer is not formed at the outer peripheral-side end. The negative electrode current collector-exposed part at the outer peripheral end comes in contact with a battery case, and in a plane vertical to the axis of an electrode body, a line connecting the axis and the center of a positive electrode current collector lead does not coincide with a line connecting the axis and the center between the coating end of the outer peripheral-side negative electrode active material layer of the negative electrode plate and the terminal part of the outer peripheral-side positive electrode plate.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 27, 2022
    Assignees: PANASONIC HOLDINGS CORPORATION, SANYO Electric Co., Ltd.
    Inventors: Tasuku Ishiguro, Atsushi Mizawa
  • Publication number: 20220238919
    Abstract: A non-aqueous electrolyte secondary battery having a positive electrode, a separator, a negative electrode opposed to the positive electrode via the separator, and a liquid electrolyte wherein the liquid electrolyte includes a lithium salt, methyl acetate, and dimethyl sulfone. The content ratio of methyl acetate in the liquid electrolyte is 10% by mass to 40% by mass, and the content ratio of dimethyl sulfone in the liquid electrolyte is 0.1% by mass to 5% by mass.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 28, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Yasuko Nozaki
  • Publication number: 20220158181
    Abstract: A negative electrode material mixture with a negative electrode active material including a Si-containing material and a carbon material; and a carbon nanotube. The Si-containing material includes, a first composite material in which Si particles are dispersed in a lithium silicate phase and/or a carbon phase, and a second composite material in which Si particles are dispersed in a SiO2 phase, at least the first composite material. A mass ratio X of the first composite material to a total of the first and second composite materials, and a mass ratio Y of the total of the first second composite materials to a total of the first composite material, the second composite material, and the carbon material satisfy a relational expression (1): 100Y?32.2X5+65.479X4?55.832X3+18.116X2?6.9275X?3.5356<0, X?1, and 0.06?Y. The non-aqueous electrolyte includes LiPF6 and LiN(SO2F)2.
    Type: Application
    Filed: March 2, 2020
    Publication date: May 19, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yukiho Okuno, Takahiro Fukuoka, Tasuku Ishiguro, Masahiro Soga
  • Publication number: 20220123367
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains lithium bis(fluorosulfonyl)imide and dimethyl sulfate.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 21, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasuko Nozaki, Tasuku Ishiguro, Tomohisa Okazaki
  • Publication number: 20220115700
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains a lithium salt and isopropyl acetate, and the lithium salt includes lithium bis(fluorosulfonyl)imide, and a content of isopropyl acetate in the liquid electrolyte is 1000 ppm or less with respect to a mass of the liquid electrolyte.
    Type: Application
    Filed: January 6, 2020
    Publication date: April 14, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Yasuko Nozaki, Tomohisa Okazaki
  • Publication number: 20220109186
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains lithium bis(fluorosulfonyl)imide and 1,4-dioxane.
    Type: Application
    Filed: December 2, 2019
    Publication date: April 7, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomohisa Okazaki, Tasuku Ishiguro, Yasuko Nozaki
  • Publication number: 20220006120
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a lithium salt and a carboxylic acid, and the lithium salt includes lithium difluorophosphate. The content of the carboxylic acid in the non-aqueous electrolyte is 5 ppm or more and 900 ppm or less with respect to the mass of the non-aqueous electrolyte.
    Type: Application
    Filed: October 30, 2019
    Publication date: January 6, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasuko Nozaki, Tasuku Ishiguro, Tomohisa Okazaki
  • Patent number: 11075312
    Abstract: A solar cell module includes solar cells having main surfaces to which inter-cell wiring members are connected, and an insulating member disposed on the main surfaces and the wiring members, and a first lead-out wire provided to the insulating member. The insulating member includes a first insulating layer formed of polyester resin, a second insulating layer formed of polyolefin or EVA and provided between the first insulating layer and the lead-out wires, and a third insulating layer formed of polyolefin or EVA and provided between the first insulating layer and the main surfaces. The third insulating layer has a thickness in a direction perpendicular to the main surfaces larger than a thickness of the second insulating layer.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 27, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Youhei Murakami, Haruhisa Hashimoto, Tasuku Ishiguro, Masahiro Iwata, Hiroyuki Kannou, Ryoji Naito, Kazuki Ohta
  • Patent number: 10930807
    Abstract: A solar cell module having: a plurality of solar cells; a first protective member provided on the light-receiving surface side of the solar cells; a second protective member provided on the reverse surface side of the solar cells; a sealing layer for sealing the solar cells, the sealing layer being provided between the protective members; and a wavelength conversion substance for absorbing light of a specific wavelength and converting the light into light of a longer wavelength. The wavelength conversion substance is contained in at least a gap region, corresponding to the gap between the solar cells, of a reverse-surface-side region located on the side of the sealing layer nearer to the second protective member than the solar cells. The concentration of the wavelength conversion substance is higher in the gap region than in the region sandwiched by the reverse surface of the solar cells and the second protective member.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: February 23, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tasuku Ishiguro, Yukihiro Yoshimine, Junpei Irikawa
  • Patent number: 10879410
    Abstract: A solar cell module includes: a solar cell; a conductive light-reflective film disposed on a back surface side of the solar cell, the conductive light-reflective film extending from an edge portion of the solar cell; an insulating member disposed between a back surface of the solar cell and the conductive light-reflective film; and a back-surface side encapsulant covering the solar cell and the conductive light-reflective film from the back surface side of the solar cell, wherein the insulating member is made of a material harder than a material of the back-surface side encapsulant.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: December 29, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masahiro Iwata, Tasuku Ishiguro, Haruhisa Hashimoto, Youhei Murakami, Akimichi Maekawa, Shingo Okamoto
  • Publication number: 20200185725
    Abstract: A nonaqueous electrolyte secondary battery includes a negative electrode plate, a negative electrode current collector lead joined to the inner peripheral end of the negative electrode plate, and a negative electrode current collector-exposed part where a negative electrode active material layer is not formed at the outer peripheral-side end. The negative electrode current collector-exposed part at the outer peripheral end comes in contact with a battery case, and in a plane vertical to the axis of an electrode body, a line connecting the axis and the center of a positive electrode current collector lead does not coincide with a line connecting the axis and the center between the coating end of the outer peripheral-side negative electrode active material layer of the negative electrode plate and the terminal part of the outer peripheral-side positive electrode plate.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Applicants: Panasonic Corporation, SANYO Electric Co., Ltd.
    Inventors: Tasuku Ishiguro, Atsushi Mizawa
  • Patent number: 10629763
    Abstract: A solar cell module includes: two solar cells adjacent one another across a space; an elongated light reflector extending over the two solar cells; and a front protector covering front surfaces of the two solar cells and the light reflector. In a plan view of the two solar cells, each of the two solar cells has chamfered corners and a substantially octagonal shape with linear long sides and linear or non-linear short sides, connected alternately. The light reflector, in the plan view, protrudes in the longitudinal direction from an intersection between a first long side facing another long side across the space, among the long sides, and a first short side one end of which is connected to the first long side, among the short sides, to cause light reflected by the uneven structure of the light-reflective film to reach at least one of the two solar cells.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 21, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akimichi Maekawa, Junpei Irikawa, Tasuku Ishiguro
  • Patent number: 10454413
    Abstract: A solar cell module includes a first solar cell, a second solar cell disposed with a gap from the first solar cell, and a light reflection sheet bridging between the first solar cell and the second solar cell across the gap. The light reflection sheet is at least partially bent between the first and second solar cells.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 22, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akimichi Maekawa, Junpei Irikawa, Tasuku Ishiguro, Haruhisa Hashimoto, Hiroshi Kanno
  • Publication number: 20190148578
    Abstract: A solar cell module including: a solar cell; a first protection member provided on the light receiving surface side of the solar cell; a second protection member provided on the rear surface side of the solar cell; an encapsulant layer, including a first encapsulant layer disposed between the solar cell and the first protection member, and a second encapsulant layer disposed between the solar cell and the second protection member, which seals the solar cell; and a wavelength conversion substance, contained in at least the first encapsulant layer, which absorbs light having a specified wavelength, and converts the wavelength. The concentration of the wavelength conversion substance is higher in the first encapsulant layer than in the second encapsulant layer, and a resin constituting the second encapsulant layer has a smaller diffusion coefficient of the wavelength conversion substance than the diffusion coefficient of a resin constituting the first encapsulant layer.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 16, 2019
    Applicant: PANASONIC INTELLECTUAL PROPERTY MGMT CO., LTD.
    Inventors: Tasuku Ishiguro, Naoto Imada, Junpei Irikawa, Akimichi Maekawa